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Ball bearing in which radius of curvature of inner ring groove is increased and outer ring groove is set at specified value of ball diameter to lower heating value of inner ring and bring heating value of outer ring close to inner ring

机译：增大内圈槽的曲率半径并将外圈槽设定为球直径的指定值的球轴承，以降低内圈的热值并使外圈的热值接近内圈

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摘要

A ball bearing having a long life even at a high rotating speed of 2 million or higher in dmn value, wherein the radius of curvature of an inner ring groove (8) is increased and that of an outer ring groove (9) is set at 50.5 to 53% of a ball diameter (da) so as to lower the heating value of an inner ring (2) and bring the heating value of an outer ring (3) close to that of the inner ring (2), whereby the heating value of the entire ball bearing (1) is suppressed and the life of the bearing can be prolonged at low cost without using a pre-loading method such as a large-flow-amount lubricating method or constant pressure pre-loading method and, in addition, a relation between a raceway track and thee ball diameter and the number of balls are optimized so as to reduce a heating value and the composition of the material of the raceway is controlled so as to improve seizure resistance or a hard film is formed on a raceway groove surface so as to improve wear resistance, whereby a lower heating value, more seizure resistance, and more wear resistance can be achieved.

机译：即使在dmn值为200万以上的高转速下也具有长寿命的球轴承，其中，内圈槽（8）的曲率半径增大，外圈槽（9）的曲率半径设置为球直径（da）的50.5％到53％，以降低内圈（2）的发热量，并使外圈（3）的发热量接近内圈（2），从而无需使用诸如大流量润滑方法或恒压预加载方法之类的预加载方法，就可以抑制整个球轴承（1）的发热量，并以低成本延长轴承的使用寿命，并且另外，优化滚道和滚珠直径之间的关系以及滚珠的数目以减小发热量，并控制滚道的材料组成以提高抗咬合性或形成硬膜。在滚道凹槽表面上以提高耐磨性，从而降低hea值，可以提高抗咬合性和耐磨性。

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公开/公告号DE19982586B4

专利类型
公开/公告日2005-02-03

原文格式PDF
申请/专利权人 NSK LTD. TOKIO/TOKYO;
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申请/专利号DE1999182586
发明设计人 YAKURA KENJI;ARAMAKI HIROTOSHI;OOURA YUKIO;FUJII AKIO;SUGITA SUMIO;KINNO DAI;NOGUCHI SHOJI;UEDA KOJI;
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申请日1999-12-22
分类号F16C33/58;F16C33/32;F16C33/62;
国家 DE
入库时间 2022-08-21 22:01:36

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